Manufacture of paper bottles



Jan. 2, 1934. c. msww' 1 1,942,345

MANUFACTURE OF PAPER BOTTLES Filed Dec. 22, 1932 czvyezzfor:

a BX 477W Patented Jan. 2, 1934 Carl Ristow, Berlin, Germany ApplicationDecember 22, 1932, Serial No. 648,487;

' and in FranceDecember 30, 1931 9 Claims. (01. 931-39) The presentinvention relates to a process and apparatus for the manufacture ofpaper bottles. Paper bottles have hitherto been made by conicallytapering at one end cylindrical or very slightly conical tubes orsleeves by means of a folding appliance, whereupon they are guided in ahorizontal position one after the other by hand or else by means offeeding devices to -a series of individual machines, which serve toconvert the tubes step by step into paper bottles,

Some of these machines served firstly to punch out the bottom,to-provide it with a flange, and to secure it to one end of the tube, byfianging it over for example, while'other machines. modi- 16 fled theshape of the other end at the bottle-in such a way as finally to producethe bottle neck. The bottles were then immersed in paraflin baths,usually by hand, and then dried.

Now according to the present invention the 20 tubes are guided from thewinding machine to a device in which the individual implements for theproduction and insertion of the bottom and the shaping of the bottleneck, which were formerly separate, are combined with one another Thetube is carried past stepwise between the implements fitted to thismachine and acting simultaneously on both sides, and the finished bottlebodies are then conveyed mechanically to a saturating device in whichthey are saturated, and are likewise dried with mechanical conveying.

The transfer from the winding machine to the actual bottle-shapingmachine by the process of the present invention is preferably alsoeffected mechanically, for instance by means of a conveying wheel, fromwhich the tube is transferred by a ram to the actual shaping machine.

It has been found advantageous, for the simplifying of the operation, toeffect the conical tapering of one end of the'tube in the conveyingwheel during the time in which the-tube, which has been produced bywinding, glued, and printed if desired, is being carried to the shapingmachine by half a revolution of the conveying wheel.

In the shaping machine itself endless bands of the nature of'thecaterpillar chains are provided. Upon the plates are fitted moulds intowhich the tubes that come from the winding machine are introduced. Theseendless bands, upon which the moulds are arranged side by side in two ormore rows, are carried through stepwise between pairs of implementsarranged above and below the caterpillar chain, so that withsimultaneous treatment of the tubeson both sides the bottom is insertedat one end and the neck isformed at the other end. The moulds arelocated in a vertical position during their passage from one pair ofimplements-to another. By this arrangejment a number of importantadvantages are ob-L tained. The output capacity of the machines isconsiderably increased by the fact that two or more caterpillar chainsarranged side by side shaped, come to a standstill for amoment, so thatthe moulded articlel retains the form given to it.'

A further advantage is that when double im-' plements are employed thespeed of revolution of the machine can be reduced to one half for thesame output, so that the machine becomes 'less worn. f

Apparatus for manufacturing'paper tubes according to the presentinvention is illustrated in the accompanying drawing, mainly insectional elevation. I 1

The actual pressing station 'is denoted by A. To the right of thispressing stationis located a winding or wrapping machine B, with afolding appliance, and to the left a removing device C for the finishedbottles, by which these are deflected to the paraifining anddrying'apparatus D, which, in the interests of economy of space,

extends above the actual pressing machine and the winding apparatus. v

In the winding machine B,'-which is of known constructional form, thepaper blanks are lodged in a stack 1, which is raised stepwise, from themachine gear, and from which a suitable device takes off the uppermost'blank from time to time to deliver it past gluing rollers 5 toa windingor wrapping mandrel 2, upon which a cylindrical or very slightly conicaltube or sleeve is formed from the blank by'windingthe latter round themandrel. The blanks are made from a paper which is so prepared as to beparticularly dense or fluidtight. In the form of con.- structionillustrated, two winding mandrels'are provided side by side, of whichonly one islvisible in the elevation View, so that two sleeves areproduced at the same time.- These are then pushed off the windingmandrel in an axial di ejector ,3.

rection, provided with an impression by printing devices 6, and pushedon to a wheel- 7, provided with folding mandrels 8, by actuating an Thiswheel executes stepwise rotations each-amounting to one-sixth of arevolution, the paper tubes being pressed against which each run overtwo rollers '10 and are driven by them. They consist-of linked chains,between which plates are secured, and therefore correspond to thedriving elements of caterpillar tractors. Upon these plates 9, whichcompose the band, are fitted the moulds 16, into which the previouslyfoldedpaper tubes 4 are inserted, with the neck end inwards. There arefurthermore supported 'in'the machine frame a number of pairs ofimplements I, II, Ill and IV, which, with stepwise advance of the bandwith the moulds, penetrate each time. into the successive moulds on bothsides,'an'd in so doing gradually impart to the article under treatmentthe shape of a bottle. Inthe manner already known in manufacturingbottles by the aid of similar machines the bottoms of the bottles arepunched out of a strip of paper, which runs in from the side.

The bottom is provided with a flange, and is then forced by pressureinto the end of the shaped tuba-whereupon the bottom is secured byfolding over the edge. At the same time the neck-of the bottle isformed'step bystep. The strip of paper rumiing off out of the machine iscut up .into small pieces, which drop into a basket. -The paper strip,with the punching implements, and the other devices for forming thebottom, and also the cutting device by which the strip of wasteisautomatically disintegrated, are not illustrated in the drawing, nor arethe details of the production of theneck of the bottle. The upperimplements are driven from a main shaft 11, which is guided in the upperframe 12 of the machine, and is provided with cam discs such as 17 and18, by which the rams, such as 19 for example, are moved. By suitablydesigning the cam discs the result can be obtained that the rams, uponreaching their end position, remain practically stationary for a moment,while thefacture of paper vessels, remains for an appreciable time underthe influence of the pressure applied. The ramsslide in guides, such as14 for example. The lower rams are also driven in any convenient andsuitable manner, which need not be more fully described.

The method of operation in detail is as follo'ws:--The moulds arrivingat the position of the pairs of implements I are partially shaped by theupper and lower rams; the upper ram prepares the upwardly directed endfor the reception of a bottom, and the lower ram, by means of a mouldingpiece 20, changes the shape of the other end of the bottle in such a waythat it ultimately produces a neck. At the position of the pairs ofimplements II, the-bottom, which has meanwhile been punched out, isinserted by the upper ram and pressed, while the lower ram carries theshaping of the neck a step further. In the position of the pairs ofimplements III the inserted bottom is then joined to the bottle yfolding over the edges, this being further continued in the position IV,while at the same time the shaping of the neck is completed by the lowerrams.

In the position of the pairs of implements IV both the bottom and theneck of the bottle are finished by pressing, and are calibrated to thecorrect shape, and the bottle bodies can now be removed from the moulds.This is efiected at a position of the endless bands, which is justopposite to the introducing position. When the moulds 16 containing thefinished bottle bodies arrive at this position they come opposite tosuction nozzles, which are secured upon slidable pipes 36, and are keptunder vacuum by an air pump 3'7. The suction air draws the finishedbottle bodies out of the moulds l6 and guides them on to holding sleeves38, which are mounted upon a bucket elevator 39. Upon the latter theytravel in the direction of the arrows to a position where they arelocated in front of a blowing nozzle 40, which is likewise connected tothe pump 37. The 'blast of air here coming into operation blows thebottle bodies out of the holding sleeves 38 on to holders 41, which arelocated upon a bucket elevator 42 forming part of the paraffining anddrying apparatus.

This paraflining apparatus D consists of a rather long casing, which, inthe interests of economy of space, -extends over the entire machine, andin which the bucket elevator 42 circulates with the tubes mounted uponthe holders,

being driven by the shaft 11. The bucket elevator travels round in thedirection of the arrows. It is guided in such a way that the bottlebodies.

mounted thereon are guidedfirst through a preliminary drying chamber 43,and then into a saturating bath 27, containing paraflin as a rule, whichis heated by means of gas burners 44. The bottle bodies here saturatedthen travel in a zigzag path, whereby the result is obtained that thesaturating medium dripping off the bottles is. caught in the vessel anddoes not splash on to the succeeding bottle bodies. At 28 the heatingpassage is so far narrowed that a warm eddy current arises, in which thebottles are dried particularly rapidly. From the highly heated eddycurrent, the bottle bodies then pass into a cooler chamber 29, and fromhere into an open-air track 30, where they are completely dried atnormal temperature. The finished bottles are then taken. off at asuitable point, and suppliedfor example to a device for stripping them.The bottles may thus be supplied to the filling installations of dairieswithout being touched by the human 13 hand.

The machine is driven by the motor 34, which in the first place actsthrough the belt 33 upon the shaft 11, andthereby actuates the pairs ofimplements of the shaping machine. From the shaft 11 a shaft 15 leads tothe paraflining apparatus, and, through the wheels 21 and 22, drives theguiding wheels 23, over which run the bands with the bottle tubes.

From the main shaft 11 abelt 24 acts through '140 the medium of a pulleyupon a rod or shaft which is not visible in the drawing because it islocated behind other parts of the apparatus. This shaft leads to twotoothed'wheels 25, which are connected-by a rod or shaft with a bevelwheel 26, from which the winding machine and the rotatable disc 31 areoperated.

I claim:

1. A method of mechanically manufacturing paper bottles, comprisingwinding paper blanks bottles from the said conveying into tubular formand securing them in that form with adhesive, folding one end of eachtube into conical form in a horizontal position, erecting the same,forming the conical end of each tube into a bottle-neck shape and at thesame time inserting a bottom in the other end of the tube, the tubesbeing carried along stepwise with their axes vertical during theseneck-shaping and bottom-inserting operations and being operated uponfrom above and from below simultaneously immersing the completely shapedbottles in a horizontal position in an impregnating bath, and dryingthem after impregnation by moving them through air, power for thewinding, sticking, folding, neck-shaping, bottom-inserting, impregnatingand drying operations being supplied from one and the same source.

2. Apparatus for mechanically manufacturing paper bottles from papertubes which are conical at one end, comprising implements for shapingbottle necks at the conical end of the tubes, implements for insertingbottoms in the other end of the tubes at the same time, conveying. meansfor carrying the paper tubes with their axes vertical past theneck-shaping and bottom-inserting implements, animpregnating bath, adrying chamber, and an impregnating and drying conveyor adapted toreceive the bottles from the said conveying means and to pass themthrough the impregnating bath and the drying chamber.

3. Apparatusfor mechanically manufacturing paper bottles from papertubes, comprising implements for shaping bottle necks at the conical endof the tubes, implements for inserting bottoms in the other end of thetubes at the same time, a folding wheel adapted to fold one end of thepaper tubesinto conical form, conveying means adapted to receive thepaper tubes from the folding wheel and to carry'them with their axesvertical past the neck-shaping and bottominserting implements, animpregnating bath, a drying chamber, and an impregnating and dryingconveyor adapted to receive the bottles from the said conveying meansand to pass them through the impregnating bath and the drying chamber.

4. Apparatus for mechanically manufacturing paper bottles from papertubes as claimed in claim 2, further comprising rams at oneend of theapparatus for transferring the tubes to the conveying means, and meansacting by air suction at the other end of the apparatus for transferringthe bottles from the said'conveying means to the impregnating and dryingconveyor. I

5. Apparatus for mechanically manufacturing paper bottles from papertubes which are conical at one end, comprising implements for shapingbottle necks at the conical end of the tubes, implements for insertingbottoms in the other end of the tubes at the same time, conveying meansfor carrying the paper tubes with their axes vertical past theneck-shaping and bottom-inserting implements, an impregnating bath, adrying chamber,and a bucket conveyor adapted to receive the means and topass them through the impregnating bath and then in a zigzag paththrough the drying chamber, means for heating the air and producingeddies of hot air in the drying chamber, and a delivery station, thebucket conveyor being further adapted to convey the bottles out of thedrying chamber into the open air and then to the delivery station.

6. Apparatus for mechanically manufacturing paper bottles from papertubes which are conical at one end, comprising implements for shapingbottle necks at the conical end of the tubes, implements for insertingbottoms in the other end of the tubes at the same time, an endlesscaterpillar chain-like band adapted to carry the paper tubes with theiraxes vertical past the neck-shaping and bottom-inserting implements,moulds secured to this band for accommodating the paper tubes, animpregnating bath, a drying chamber, an impregnating and drying conveyorfor passing the bottlesthrough the impregnating bath and through thedrying chamber, and means for transferring the bottles from thechain-like band to the impregnating and drying conveyor. I

these bands for accommodating the paper tubes,

an impregnating bath, a drying chamber, an im pregnating and dryingconveyor for passing the bottles through the impregnating bath andthrough the drying chamber, and means for transferring the bottles fromthe chain-like band to the impregnating and drying conveyor.

8. Apparatus for mechanically manufacturing paper bottles from papertubes as claimed in claim 5, further comprising a casing enclosing thebucket conveyor except where it passes into the open air, the bottom ofthis casing containing the impregnating bath, and the eddy-producingmeans being constituted by a constriction in the cross-sectional area ofthe casing at a position above the impregnating bath.

9. Apparatus for mechanically manufacturing paper bottles, forming paperinto tubes, a folding wheel adapted to fold one end of the paper tubesinto a conical form, a ram for removing the tubes from the said wheel,implements for shaping bottle necks at the conical end of the tubes,implements for inserting bottoms. in the other end of the tubes at thesame time, an endless caterpillar chainlike band adapted to carry thepaper tubes with their axes vertical past the neck-shaping andbottom-inserting implements, moulds securedto this band foraccommodating the paper tubes, an impregnating bath, a drying chamber, abucket conveyor for passing the bottles through the impregnating bathand through the drying chamber, means acting by air suction fortransferring the bottles from the endless caterpillar chain-like band tothe bucket conveyor, a single motor capable of driving all the saidelements, a main shaft driven by the motor, and means adapted totransmit the requisite power from the main shaft to the said elements.

CARL RISTOW.

comprising a winding machine for

